# US 10,374,061 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,061 B2 - Document ID: US10374061B2 - Status: Granted - Kind: B2 - Application number: 15/628,759 - Filed: 2017-06-21 - Published: 2018-01-25 - Granted: 2019-08-06 - Earliest claimed: 2016-07-22 - Assignees: EverDisplay Optronics (Shanghai) Limited - Applicants: EverDisplay Optronics (Shanghai) Limited - Inventors: Nana Xiong - Web page: https://patentgrep.com/patent/US10374061B2 ## CPC - H10D 30/031: {of thin-film transistors [TFT]} - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H10D 30/6704: {having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device} - H10D 86/40: characterised by multiple TFTs - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - G09G 2230/00: Details of flat display driving waveforms - G09G 2300/0408: Integration of the drivers onto the display substrate - G09G 2300/043: Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver - G09G 2310/0248: Precharge or discharge of column electrodes before or after applying exact column voltages - G09G 2310/0256: with the purpose of reversing the voltage across a light emitting or modulating element within a pixel - G09G 2330/023: using energy recovery or conservation - G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present disclosure provides a display device, including: a gate line and a data line; a pixel array; a gate driver, configured to provide a gate signal to the gate line; a test circuit, coupled to a first input line and a second input line respectively; and a data driver, including a first power line, a first transistor and a third input line, wherein the first power line is configured to supply an initial voltage to the pixel array, the first power line is coupled to the first input line via the first transistor, a gate of the first transistor is coupled to the third input line, the third input line is configured to transmit a pre-charge control signal, and the pixel array is configured to supply the initial voltage to each pixel in the pixel array based on the pre-charge control signal. ## Claims ### Claim 1 A display device, comprising: a display region; a gate line and a data line which are crosswise arranged; a pixel array, arranged at a crossed region of the gate line and the data line and arranged in the display region; a gate driver, configured to provide a gate signal to the gate line; a test circuit, coupled to a first input line and a second input line respectively, wherein the first input line is configured to transmit a test signal, the second input line is configured to transmit a test control signal, and the test circuit is configured to provide the test signal to the data line based on the test control signal; and a data driver, comprising a first power line, a first transistor and a third input line, wherein the first power line is configured to supply an initial voltage to the pixel array, the first power line is coupled to the first input line via the first transistor, a gate of the first transistor is coupled to the third input line, the third input line is configured to transmit a pre-charge control signal, and the pixel array is configured to supply the initial voltage to each pixel in the pixel array based on the pre-charge control signal. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the data driver further comprises a second transistor, the first input line is coupled to the pixel array via the second transistor, and a gate of the second transistor is coupled to the corresponding second input line. ### Claim 3 (depends on 2) The display device according to claim 2, wherein the second transistor is arranged between the first transistor and the display region. ### Claim 4 (depends on 3) The display device according to claim 3, further comprising a light-emitting control driver configured to provide a light-emitting control signal to a light-emitting control line parallel to the gate line. ### Claim 5 (depends on 4) The display device according to claim 4, wherein the gate driver and the light-emitting control driver are respectively arranged on two dissimilar sides of the pixel array. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the data driver and the test circuit are respectively arranged on two dissimilar sides of the pixel array, and the data driver is configured to provide a data signal to the data line. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the first input line is arranged outside the display region. ### Claim 8 (depends on 7) The display device according to claim 7, wherein the second input line is arranged outside the display region. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the first input line is more proximal to the pixel array than the second input line. ### Claim 10 (depends on 1) The display device according to claim 1, wherein the first power line is coupled to a side of the pixel array.